Jack.



PATENTED JUNE 30, 1903. S. R. TUGGLB 6c C. W. DOERING. l

J ACK.

APPLICATION FILED 00T. 24, 1902.

N0 MODEL.

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UNTTED STATES Patented .rune 3o, '1903.

PATENT OFFICE.

SAMUEL RITCHIE TUGGLE AND CHARLES WILLIAM DOERING, OF HOUSTON, TEXAS.

JACK.

SPECIFICATION forming part of Letters Patent No. 732,142, dated June 30, 1903. Application filed October 24,1902. Serial No. 128,569. (No model."

To @ZZ whom t may concern:

Be it known that we, SAMUEL RITCHIE TUGGLE and CHARLES WILLIAM DOERING, citizens of the United States, residing at Houston, in the county of Harris and State of Texas, have invented new and useful Improvements in Jacks, of which the following is a specification.

Our invention relates to jacks such as are designed to be operated by fluid-pressuree., water, air, or other iiuid under pressure; and it has for its object to provide a telescopic fluid pressure jack designed more particularly for use in conjunction with locomotive driving axles and wheels, as hereinafter pointed out.

The invention will be fully understood from the following description and claims when taken in connection with the accompanying drawings, in which- Figure l is a vertical section of our improved jack as it appears when-raised to the full extent. Fig. 2 is an enlarged View, partly in sectionl and partlyin elevation, illustrating the members of the jack as nested; and Fig. 3 is a detail section taken in the plane indicated by the broken line 3 3 of Fig. l and illustrating the manner in which we prefer te mount the jack on a carriage.

Similar letters of' reference designate corresponding parts in all ot' the several views of the drawings, referring to which- A is the lower cylindrical member, B C the upper cylindrical members, and D the piston, of our improved jack. The member A is preferably made up of a lower head or bed-plate a, a cylindrical body b of less diameter than said head arranged thereon and having an interior flange c and an exterior flange CZ at its `upper end, and rods e, interposed between and connecting the head a and the liange d. The said member A is interiorly of asize to receive a fiange f at the lower end of the member B, which in turn is interiorly of a size to receive a flange g at the lower end of the member C.

The members B C are provided at their npper ends with inwardly-directed flanges h, and these flanges and the flange c of member A are provided with apertures t', as shown, for the escape of air incident. to the raising of the jack. The memberC is also provided at its upper end with a ringj, which projects beyond its side and is adapted when the members are nested, Fig. 2, to bear on the upper end of the memberB for a purpose hereinafter described.

The piston D is of a size to move in the member C and is provided with a rod k, preferably hollow, Whiclrextends through the upper end ot' the said member. On this rod Zt is secured a socket l, which rests on the member C, Fig. 2, and in which is pivotally held by a pin m or other means a rounded protuberance n at the under side of a jackplate p. This jack-plate p has concavities p' in opposite side walls and contains a hardwood filling q, concave at its upper side, and roller r, the latter being arranged in recesses r' in the filling at opposite sides of the center of the jack-plate and being designed to adjust themselves to locomotive drivingaxles and for the purpose of lowering the center of gravity of the driving-wheels. The hardwood filling q serves to support the rollers r throughout the length thereof when the Weight of alocomotive-axle is imposed on said rollers, and consequently removes strain from the bearings ot' the roller in the jack-plate.

At their lower ends the cylindrical members B C and the piston D are provided with gaskets s, preferably of leather, whichare secured between the said ends and followerrings t, connected thereto.

E is a three-way cock, F a pressure-gage, and G an exhaust-valve. The three-way cock is connected with the pressure-gage and the bottom of the member A by a pipe u, with the exhaust-valve G by a pipe o, and with a source of fluid-pressure supply (not shown) bya pipe 1U. From' this it follows that when the th ree-way cock is adjusted to effect connection between the source of fluid-pressure supply and the interior of the member A the jack will be raised or extended, and when said cock is adjusted to connect the interior of' the member A and tl1eexhaustvalve G and the said valve G is opened the jack will be lowered. It will also be observed that by opening the valve G to a greater or less extent the lowering of the jack and the burden imposed thereon may be readily regulated.

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The ring j on the cylindrical member C serves by engaging the upper end of the member B, Fig. 2, to admit of the combined lifting power of the members B and C and the piston D being utilized.

H H are the suspension-rods disposed in lugs at'the under side'of the bed-plate dof the lower member A of the jack, I-I axles having wheels J at their ends arranged to travel on rails K, and L L hangers, preferably U-shaped, connecting the suspensionrods and the axles. The suspension-rods, axles and Wheels, and the-hangers constitute the carriage on which we prefer to mount our improved jack, and when the said carriage is arranged on a track, as shown, it will be observed that the jack may be moved with but a minimum amount ot' eiort.

Ourimproved jack has been operated in connection with a drop-pit having movable sides, being used to lower locomotive driving axles and wheels, which are then run forward on a lower track in the pit and raised by an air-hoist to an upper track. When thus used, the jack is capable of raising and lowering the driving axles and wheels of the heaviest locomotive and is a great labor-saver.

While our improved jack is designed` more particularly for raising and lowering locomotive driving axles and wheels, it may obviously be used to advantage for other purposes when desired.

We have entered into a detailed descrip` tion of the construction and relative arrange- 'ment of the parts embraced in the present and preferred embodiment of our invention in order to impart a full, clear, and exact understanding of the same. We do not desire,

..however, to be understood as confining ourselves to such specific construction and arrangement of parts, as such changes or modifications may be made in practice as fairly fall within the scope of our invention as claimed.

Having described our invention, what we claim, and desire to secure by Letters Patent, is-

1. A telescopic, fluid-pressure jack comprising a cylindrical member, a piston movable in the cylindrical member, and having a rod extending through one end of the same, a jack-plate arranged on the piston-rod, a wood filling arranged in the jack-plate; said filling being concave at its upper side, and

having recesses in said side at opposite sides ing concavities in opposite side walls, a wood lling arranged in the jack-plate; said filling being concave at its upper side, and. having recesses in said side at opposite sides of the center of the jack-plate, and rollers mounted in the jack-plate, and disposed in said recesses of the filling, and resting on the filling.

3. The telescopic, fluid-pressure jack described, comprising a lower cylindrical member made up of a bed-plate having depending apertured lugs, a body of less diameter than the bed-plate, arranged thereon, and having' an interior apertured flange and an exterior iiange at its upper end, and rods connecting the bed-plate and said exterior flange of the body, one or more upper cylindrical members arranged to nest in the lower member, and having inwardly-directed apertured Hanges at their upper ends, and also having outwardly-extending flanges at their lower ends, a piston movable in the upper member, and having a rod extending through the upper end thereof, follower-rings connected to the lower ends ofthe upper cylindrical members and the piston, gaskets secured between said rings and the upper members and piston, means for supplying fluid-pressure to the lower cylindrical member, axles equipped with wheels, suspension-rods disposed in the depending lugs of the bed-plate, and hangers connecting the axles and said suspensionrods.

4E. In a telescopic, Huid-pressure jack, the combination-of a 'lower cylindrical member comprising a bed-plate, a body of less diameter than the bed-plate, arranged thereon, and having an interior apertured iiange, and an exterior iiange atits upper end, and rods connecting the bed-plate and said exterior flange ofthe body, one or more upper cylindrical members arranged to nest in the lower member, and having inwardly-directed apertured ianges at their upper ends, and also having outwardly-extending flanges at their lower ends, a piston movable in the upper member, and having a rod vextending through the upper end thereof, follower-rings connected to the lower ends of the upper cylindrical members and the piston, gaskets secured between said rings and the upper members and piston, and means for supplying fluid-pressure to the lower cylindrical member.

In testimony whereof we have hereunto-set our hands in presence of two subscribing witnesses. A

SAMUEL RlTOHI-E TUGGLE. y

CHARLES WILLlAM DOERING. Witnesses:

W. D. NICHOLAS,

JOE D. LYoNs.

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